1213 lines
38 KiB
C++
1213 lines
38 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=4 sw=2 et tw=78: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsEditorEventListener.h"
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#include "mozilla/Assertions.h" // for MOZ_ASSERT, etc
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#include "mozilla/EventListenerManager.h" // for EventListenerManager
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#include "mozilla/IMEStateManager.h" // for IMEStateManager
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#include "mozilla/Preferences.h" // for Preferences
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#include "mozilla/TextEvents.h" // for WidgetCompositionEvent
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#include "mozilla/dom/Element.h" // for Element
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#include "mozilla/dom/EventTarget.h" // for EventTarget
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#include "mozilla/dom/Selection.h"
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#include "nsAString.h"
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#include "nsCaret.h" // for nsCaret
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#include "nsDebug.h" // for NS_ENSURE_TRUE, etc
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#include "nsEditor.h" // for nsEditor, etc
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#include "nsFocusManager.h" // for nsFocusManager
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#include "nsGkAtoms.h" // for nsGkAtoms, nsGkAtoms::input
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#include "nsIClipboard.h" // for nsIClipboard, etc
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#include "nsIContent.h" // for nsIContent
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#include "nsIController.h" // for nsIController
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#include "nsID.h"
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#include "mozilla/dom/DOMStringList.h"
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#include "mozilla/dom/DataTransfer.h"
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#include "nsIDOMDocument.h" // for nsIDOMDocument
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#include "nsIDOMDragEvent.h" // for nsIDOMDragEvent
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#include "nsIDOMElement.h" // for nsIDOMElement
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#include "nsIDOMEvent.h" // for nsIDOMEvent
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#include "nsIDOMEventTarget.h" // for nsIDOMEventTarget
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#include "nsIDOMKeyEvent.h" // for nsIDOMKeyEvent
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#include "nsIDOMMouseEvent.h" // for nsIDOMMouseEvent
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#include "nsIDOMNode.h" // for nsIDOMNode
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#include "nsIDocument.h" // for nsIDocument
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#include "nsIEditor.h" // for nsEditor::GetSelection, etc
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#include "nsIEditorIMESupport.h"
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#include "nsIEditorMailSupport.h" // for nsIEditorMailSupport
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#include "nsIFocusManager.h" // for nsIFocusManager
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#include "nsIFormControl.h" // for nsIFormControl, etc
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#include "nsIHTMLEditor.h" // for nsIHTMLEditor
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#include "nsINode.h" // for nsINode, ::NODE_IS_EDITABLE, etc
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#include "nsIPlaintextEditor.h" // for nsIPlaintextEditor, etc
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#include "nsIPresShell.h" // for nsIPresShell
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#include "nsISelectionController.h" // for nsISelectionController, etc
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#include "nsITransferable.h" // for kFileMime, kHTMLMime, etc
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#include "nsIWidget.h" // for nsIWidget
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#include "nsLiteralString.h" // for NS_LITERAL_STRING
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#include "nsPIWindowRoot.h" // for nsPIWindowRoot
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#include "nsPrintfCString.h" // for nsPrintfCString
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#include "nsRange.h"
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#include "nsServiceManagerUtils.h" // for do_GetService
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#include "nsString.h" // for nsAutoString
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#include "nsQueryObject.h" // for do_QueryObject
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#ifdef HANDLE_NATIVE_TEXT_DIRECTION_SWITCH
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#include "nsContentUtils.h" // for nsContentUtils, etc
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#include "nsIBidiKeyboard.h" // for nsIBidiKeyboard
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#endif
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#include "mozilla/unused.h"
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#include "mozilla/dom/TabParent.h"
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class nsPresContext;
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using namespace mozilla;
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using namespace mozilla::dom;
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static void
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DoCommandCallback(Command aCommand, void* aData)
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{
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nsIDocument* doc = static_cast<nsIDocument*>(aData);
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nsPIDOMWindow* win = doc->GetWindow();
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if (!win) {
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return;
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}
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nsCOMPtr<nsPIWindowRoot> root = win->GetTopWindowRoot();
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if (!root) {
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return;
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}
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const char* commandStr = WidgetKeyboardEvent::GetCommandStr(aCommand);
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nsCOMPtr<nsIController> controller;
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root->GetControllerForCommand(commandStr, getter_AddRefs(controller));
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if (!controller) {
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return;
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}
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bool commandEnabled;
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nsresult rv = controller->IsCommandEnabled(commandStr, &commandEnabled);
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NS_ENSURE_SUCCESS_VOID(rv);
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if (commandEnabled) {
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controller->DoCommand(commandStr);
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}
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}
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nsEditorEventListener::nsEditorEventListener()
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: mEditor(nullptr)
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, mCommitText(false)
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, mInTransaction(false)
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, mMouseDownOrUpConsumedByIME(false)
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#ifdef HANDLE_NATIVE_TEXT_DIRECTION_SWITCH
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, mHaveBidiKeyboards(false)
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, mShouldSwitchTextDirection(false)
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, mSwitchToRTL(false)
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#endif
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{
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}
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nsEditorEventListener::~nsEditorEventListener()
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{
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if (mEditor) {
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NS_WARNING("We're not uninstalled");
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Disconnect();
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}
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}
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nsresult
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nsEditorEventListener::Connect(nsEditor* aEditor)
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{
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NS_ENSURE_ARG(aEditor);
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#ifdef HANDLE_NATIVE_TEXT_DIRECTION_SWITCH
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nsIBidiKeyboard* bidiKeyboard = nsContentUtils::GetBidiKeyboard();
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if (bidiKeyboard) {
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bool haveBidiKeyboards = false;
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bidiKeyboard->GetHaveBidiKeyboards(&haveBidiKeyboards);
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mHaveBidiKeyboards = haveBidiKeyboards;
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}
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#endif
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mEditor = aEditor;
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nsresult rv = InstallToEditor();
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if (NS_FAILED(rv)) {
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Disconnect();
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}
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return rv;
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}
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nsresult
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nsEditorEventListener::InstallToEditor()
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{
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NS_PRECONDITION(mEditor, "The caller must set mEditor");
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nsCOMPtr<EventTarget> piTarget = mEditor->GetDOMEventTarget();
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NS_ENSURE_TRUE(piTarget, NS_ERROR_FAILURE);
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// register the event listeners with the listener manager
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EventListenerManager* elmP = piTarget->GetOrCreateListenerManager();
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NS_ENSURE_STATE(elmP);
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#ifdef HANDLE_NATIVE_TEXT_DIRECTION_SWITCH
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elmP->AddEventListenerByType(this,
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NS_LITERAL_STRING("keydown"),
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TrustedEventsAtSystemGroupBubble());
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elmP->AddEventListenerByType(this,
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NS_LITERAL_STRING("keyup"),
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TrustedEventsAtSystemGroupBubble());
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#endif
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elmP->AddEventListenerByType(this,
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NS_LITERAL_STRING("keypress"),
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TrustedEventsAtSystemGroupBubble());
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elmP->AddEventListenerByType(this,
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NS_LITERAL_STRING("dragenter"),
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TrustedEventsAtSystemGroupBubble());
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elmP->AddEventListenerByType(this,
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NS_LITERAL_STRING("dragover"),
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TrustedEventsAtSystemGroupBubble());
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elmP->AddEventListenerByType(this,
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NS_LITERAL_STRING("dragexit"),
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TrustedEventsAtSystemGroupBubble());
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elmP->AddEventListenerByType(this,
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NS_LITERAL_STRING("drop"),
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TrustedEventsAtSystemGroupBubble());
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// XXX We should add the mouse event listeners as system event group.
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// E.g., web applications cannot prevent middle mouse paste by
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// preventDefault() of click event at bubble phase.
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// However, if we do so, all click handlers in any frames and frontend
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// code need to check if it's editable. It makes easier create new bugs.
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elmP->AddEventListenerByType(this,
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NS_LITERAL_STRING("mousedown"),
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TrustedEventsAtCapture());
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elmP->AddEventListenerByType(this,
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NS_LITERAL_STRING("mouseup"),
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TrustedEventsAtCapture());
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elmP->AddEventListenerByType(this,
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NS_LITERAL_STRING("click"),
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TrustedEventsAtCapture());
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// Focus event doesn't bubble so adding the listener to capturing phase.
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// Make sure this works after bug 235441 gets fixed.
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elmP->AddEventListenerByType(this,
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NS_LITERAL_STRING("blur"),
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TrustedEventsAtCapture());
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elmP->AddEventListenerByType(this,
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NS_LITERAL_STRING("focus"),
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TrustedEventsAtCapture());
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elmP->AddEventListenerByType(this,
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NS_LITERAL_STRING("text"),
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TrustedEventsAtSystemGroupBubble());
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elmP->AddEventListenerByType(this,
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NS_LITERAL_STRING("compositionstart"),
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TrustedEventsAtSystemGroupBubble());
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elmP->AddEventListenerByType(this,
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NS_LITERAL_STRING("compositionend"),
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TrustedEventsAtSystemGroupBubble());
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return NS_OK;
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}
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void
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nsEditorEventListener::Disconnect()
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{
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if (!mEditor) {
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return;
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}
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UninstallFromEditor();
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nsIFocusManager* fm = nsFocusManager::GetFocusManager();
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if (fm) {
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nsCOMPtr<nsIDOMElement> domFocus;
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fm->GetFocusedElement(getter_AddRefs(domFocus));
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nsCOMPtr<nsINode> focusedElement = do_QueryInterface(domFocus);
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mozilla::dom::Element* root = mEditor->GetRoot();
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if (focusedElement && root &&
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nsContentUtils::ContentIsDescendantOf(focusedElement, root)) {
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// Reset the Selection ancestor limiter and SelectionController state
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// that nsEditor::InitializeSelection set up.
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mEditor->FinalizeSelection();
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}
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}
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mEditor = nullptr;
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}
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void
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nsEditorEventListener::UninstallFromEditor()
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{
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nsCOMPtr<EventTarget> piTarget = mEditor->GetDOMEventTarget();
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if (!piTarget) {
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return;
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}
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EventListenerManager* elmP = piTarget->GetOrCreateListenerManager();
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if (!elmP) {
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return;
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}
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#ifdef HANDLE_NATIVE_TEXT_DIRECTION_SWITCH
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elmP->RemoveEventListenerByType(this,
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NS_LITERAL_STRING("keydown"),
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TrustedEventsAtSystemGroupBubble());
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elmP->RemoveEventListenerByType(this,
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NS_LITERAL_STRING("keyup"),
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TrustedEventsAtSystemGroupBubble());
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#endif
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elmP->RemoveEventListenerByType(this,
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NS_LITERAL_STRING("keypress"),
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TrustedEventsAtSystemGroupBubble());
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elmP->RemoveEventListenerByType(this,
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NS_LITERAL_STRING("dragenter"),
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TrustedEventsAtSystemGroupBubble());
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elmP->RemoveEventListenerByType(this,
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NS_LITERAL_STRING("dragover"),
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TrustedEventsAtSystemGroupBubble());
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elmP->RemoveEventListenerByType(this,
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NS_LITERAL_STRING("dragexit"),
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TrustedEventsAtSystemGroupBubble());
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elmP->RemoveEventListenerByType(this,
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NS_LITERAL_STRING("drop"),
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TrustedEventsAtSystemGroupBubble());
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elmP->RemoveEventListenerByType(this,
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NS_LITERAL_STRING("mousedown"),
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TrustedEventsAtCapture());
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elmP->RemoveEventListenerByType(this,
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NS_LITERAL_STRING("mouseup"),
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TrustedEventsAtCapture());
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elmP->RemoveEventListenerByType(this,
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NS_LITERAL_STRING("click"),
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TrustedEventsAtCapture());
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elmP->RemoveEventListenerByType(this,
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NS_LITERAL_STRING("blur"),
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TrustedEventsAtCapture());
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elmP->RemoveEventListenerByType(this,
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NS_LITERAL_STRING("focus"),
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TrustedEventsAtCapture());
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elmP->RemoveEventListenerByType(this,
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NS_LITERAL_STRING("text"),
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TrustedEventsAtSystemGroupBubble());
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elmP->RemoveEventListenerByType(this,
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NS_LITERAL_STRING("compositionstart"),
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TrustedEventsAtSystemGroupBubble());
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elmP->RemoveEventListenerByType(this,
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NS_LITERAL_STRING("compositionend"),
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TrustedEventsAtSystemGroupBubble());
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}
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already_AddRefed<nsIPresShell>
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nsEditorEventListener::GetPresShell()
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{
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NS_PRECONDITION(mEditor,
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"The caller must check whether this is connected to an editor");
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return mEditor->GetPresShell();
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}
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nsPresContext*
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nsEditorEventListener::GetPresContext()
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{
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nsCOMPtr<nsIPresShell> presShell = GetPresShell();
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return presShell ? presShell->GetPresContext() : nullptr;
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}
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nsIContent*
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nsEditorEventListener::GetFocusedRootContent()
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{
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NS_ENSURE_TRUE(mEditor, nullptr);
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nsCOMPtr<nsIContent> focusedContent = mEditor->GetFocusedContent();
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if (!focusedContent) {
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return nullptr;
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}
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nsIDocument* composedDoc = focusedContent->GetComposedDoc();
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NS_ENSURE_TRUE(composedDoc, nullptr);
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return composedDoc->HasFlag(NODE_IS_EDITABLE) ? nullptr : focusedContent;
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}
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bool
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nsEditorEventListener::EditorHasFocus()
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{
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NS_PRECONDITION(mEditor,
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"The caller must check whether this is connected to an editor");
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nsCOMPtr<nsIContent> focusedContent = mEditor->GetFocusedContent();
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if (!focusedContent) {
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return false;
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}
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nsIDocument* composedDoc = focusedContent->GetComposedDoc();
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return !!composedDoc;
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}
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/**
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* nsISupports implementation
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*/
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NS_IMPL_ISUPPORTS(nsEditorEventListener, nsIDOMEventListener)
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/**
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* nsIDOMEventListener implementation
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*/
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NS_IMETHODIMP
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nsEditorEventListener::HandleEvent(nsIDOMEvent* aEvent)
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{
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NS_ENSURE_TRUE(mEditor, NS_ERROR_FAILURE);
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nsCOMPtr<nsIEditor> kungFuDeathGrip = mEditor;
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mozilla::Unused << kungFuDeathGrip;
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WidgetEvent* internalEvent = aEvent->GetInternalNSEvent();
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// Let's handle each event with the message of the internal event of the
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// coming event. If the DOM event was created with improper interface,
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// e.g., keydown event is created with |new MouseEvent("keydown", {});|,
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// its message is always 0. Therefore, we can ban such strange event easy.
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// However, we need to handle strange "focus" and "blur" event. See the
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// following code of this switch statement.
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// NOTE: Each event handler may require specific event interface. Before
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// calling it, this queries the specific interface. If it would fail,
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// each event handler would just ignore the event. So, in this method,
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// you don't need to check if the QI succeeded before each call.
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switch (internalEvent->mMessage) {
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// dragenter
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case eDragEnter: {
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nsCOMPtr<nsIDOMDragEvent> dragEvent = do_QueryInterface(aEvent);
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return DragEnter(dragEvent);
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}
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// dragover
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case eDragOver: {
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nsCOMPtr<nsIDOMDragEvent> dragEvent = do_QueryInterface(aEvent);
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return DragOver(dragEvent);
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}
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// dragexit
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case eDragExit: {
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nsCOMPtr<nsIDOMDragEvent> dragEvent = do_QueryInterface(aEvent);
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return DragExit(dragEvent);
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}
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// drop
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case eDrop: {
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nsCOMPtr<nsIDOMDragEvent> dragEvent = do_QueryInterface(aEvent);
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return Drop(dragEvent);
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}
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#ifdef HANDLE_NATIVE_TEXT_DIRECTION_SWITCH
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// keydown
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case eKeyDown: {
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nsCOMPtr<nsIDOMKeyEvent> keyEvent = do_QueryInterface(aEvent);
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return KeyDown(keyEvent);
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}
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// keyup
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case eKeyUp: {
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nsCOMPtr<nsIDOMKeyEvent> keyEvent = do_QueryInterface(aEvent);
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return KeyUp(keyEvent);
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}
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#endif // #ifdef HANDLE_NATIVE_TEXT_DIRECTION_SWITCH
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// keypress
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case eKeyPress: {
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nsCOMPtr<nsIDOMKeyEvent> keyEvent = do_QueryInterface(aEvent);
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return KeyPress(keyEvent);
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}
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// mousedown
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case eMouseDown: {
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nsCOMPtr<nsIDOMMouseEvent> mouseEvent = do_QueryInterface(aEvent);
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NS_ENSURE_TRUE(mouseEvent, NS_OK);
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// nsEditorEventListener may receive (1) all mousedown, mouseup and click
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// events, (2) only mousedown event or (3) only mouseup event.
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// mMouseDownOrUpConsumedByIME is used only for ignoring click event if
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// preceding mousedown and/or mouseup event is consumed by IME.
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// Therefore, even if case #2 or case #3 occurs,
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// mMouseDownOrUpConsumedByIME is true here. Therefore, we should always
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// overwrite it here.
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mMouseDownOrUpConsumedByIME = NotifyIMEOfMouseButtonEvent(mouseEvent);
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return mMouseDownOrUpConsumedByIME ? NS_OK : MouseDown(mouseEvent);
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}
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// mouseup
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case eMouseUp: {
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nsCOMPtr<nsIDOMMouseEvent> mouseEvent = do_QueryInterface(aEvent);
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NS_ENSURE_TRUE(mouseEvent, NS_OK);
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// See above comment in the eMouseDown case, first.
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// This code assumes that case #1 is occuring. However, if case #3 may
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// occurs after case #2 and the mousedown is consumed,
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// mMouseDownOrUpConsumedByIME is true even though nsEditorEventListener
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// has not received the preceding mousedown event of this mouseup event.
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// So, mMouseDownOrUpConsumedByIME may be invalid here. However,
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// this is not a matter because mMouseDownOrUpConsumedByIME is referred
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// only by eMouseClick case but click event is fired only in case #1.
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// So, before a click event is fired, mMouseDownOrUpConsumedByIME is
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// always initialized in the eMouseDown case if it's referred.
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if (NotifyIMEOfMouseButtonEvent(mouseEvent)) {
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mMouseDownOrUpConsumedByIME = true;
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}
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return mMouseDownOrUpConsumedByIME ? NS_OK : MouseUp(mouseEvent);
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}
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// click
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case eMouseClick: {
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nsCOMPtr<nsIDOMMouseEvent> mouseEvent = do_QueryInterface(aEvent);
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NS_ENSURE_TRUE(mouseEvent, NS_OK);
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// If the preceding mousedown event or mouseup event was consumed,
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// editor shouldn't handle this click event.
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if (mMouseDownOrUpConsumedByIME) {
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mMouseDownOrUpConsumedByIME = false;
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mouseEvent->PreventDefault();
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return NS_OK;
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}
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return MouseClick(mouseEvent);
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}
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// focus
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case eFocus:
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return Focus(aEvent);
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// blur
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case eBlur:
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return Blur(aEvent);
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// text
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case eCompositionChange:
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return HandleText(aEvent);
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// compositionstart
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case eCompositionStart:
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return HandleStartComposition(aEvent);
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// compositionend
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case eCompositionEnd:
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HandleEndComposition(aEvent);
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return NS_OK;
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default:
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break;
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}
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nsAutoString eventType;
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aEvent->GetType(eventType);
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// We should accept "focus" and "blur" event even if it's synthesized with
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// wrong interface for compatibility with older Gecko.
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if (eventType.EqualsLiteral("focus")) {
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return Focus(aEvent);
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}
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|
if (eventType.EqualsLiteral("blur")) {
|
|
return Blur(aEvent);
|
|
}
|
|
#ifdef DEBUG
|
|
nsPrintfCString assertMessage("Editor doesn't handle \"%s\" event "
|
|
"because its internal event doesn't have proper message",
|
|
NS_ConvertUTF16toUTF8(eventType).get());
|
|
NS_ASSERTION(false, assertMessage.get());
|
|
#endif
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
#ifdef HANDLE_NATIVE_TEXT_DIRECTION_SWITCH
|
|
#include <windows.h>
|
|
// Undo the windows.h damage
|
|
#undef GetMessage
|
|
#undef CreateEvent
|
|
#undef GetClassName
|
|
#undef GetBinaryType
|
|
#undef RemoveDirectory
|
|
#undef SetProp
|
|
|
|
namespace {
|
|
|
|
// This function is borrowed from Chromium's ImeInput::IsCtrlShiftPressed
|
|
bool IsCtrlShiftPressed(bool& isRTL)
|
|
{
|
|
BYTE keystate[256];
|
|
if (!::GetKeyboardState(keystate)) {
|
|
return false;
|
|
}
|
|
|
|
// To check if a user is pressing only a control key and a right-shift key
|
|
// (or a left-shift key), we use the steps below:
|
|
// 1. Check if a user is pressing a control key and a right-shift key (or
|
|
// a left-shift key).
|
|
// 2. If the condition 1 is true, we should check if there are any other
|
|
// keys pressed at the same time.
|
|
// To ignore the keys checked in 1, we set their status to 0 before
|
|
// checking the key status.
|
|
const int kKeyDownMask = 0x80;
|
|
if ((keystate[VK_CONTROL] & kKeyDownMask) == 0) {
|
|
return false;
|
|
}
|
|
|
|
if (keystate[VK_RSHIFT] & kKeyDownMask) {
|
|
keystate[VK_RSHIFT] = 0;
|
|
isRTL = true;
|
|
} else if (keystate[VK_LSHIFT] & kKeyDownMask) {
|
|
keystate[VK_LSHIFT] = 0;
|
|
isRTL = false;
|
|
} else {
|
|
return false;
|
|
}
|
|
|
|
// Scan the key status to find pressed keys. We should abandon changing the
|
|
// text direction when there are other pressed keys.
|
|
// This code is executed only when a user is pressing a control key and a
|
|
// right-shift key (or a left-shift key), i.e. we should ignore the status of
|
|
// the keys: VK_SHIFT, VK_CONTROL, VK_RCONTROL, and VK_LCONTROL.
|
|
// So, we reset their status to 0 and ignore them.
|
|
keystate[VK_SHIFT] = 0;
|
|
keystate[VK_CONTROL] = 0;
|
|
keystate[VK_RCONTROL] = 0;
|
|
keystate[VK_LCONTROL] = 0;
|
|
for (int i = 0; i <= VK_PACKET; ++i) {
|
|
if (keystate[i] & kKeyDownMask) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
}
|
|
|
|
// This logic is mostly borrowed from Chromium's
|
|
// RenderWidgetHostViewWin::OnKeyEvent.
|
|
|
|
nsresult
|
|
nsEditorEventListener::KeyUp(nsIDOMKeyEvent* aKeyEvent)
|
|
{
|
|
NS_ENSURE_TRUE(aKeyEvent, NS_OK);
|
|
|
|
if (!mHaveBidiKeyboards) {
|
|
return NS_OK;
|
|
}
|
|
|
|
uint32_t keyCode = 0;
|
|
aKeyEvent->GetKeyCode(&keyCode);
|
|
if ((keyCode == nsIDOMKeyEvent::DOM_VK_SHIFT ||
|
|
keyCode == nsIDOMKeyEvent::DOM_VK_CONTROL) &&
|
|
mShouldSwitchTextDirection && mEditor->IsPlaintextEditor()) {
|
|
mEditor->SwitchTextDirectionTo(mSwitchToRTL ?
|
|
nsIPlaintextEditor::eEditorRightToLeft :
|
|
nsIPlaintextEditor::eEditorLeftToRight);
|
|
mShouldSwitchTextDirection = false;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsEditorEventListener::KeyDown(nsIDOMKeyEvent* aKeyEvent)
|
|
{
|
|
NS_ENSURE_TRUE(aKeyEvent, NS_OK);
|
|
|
|
if (!mHaveBidiKeyboards) {
|
|
return NS_OK;
|
|
}
|
|
|
|
uint32_t keyCode = 0;
|
|
aKeyEvent->GetKeyCode(&keyCode);
|
|
if (keyCode == nsIDOMKeyEvent::DOM_VK_SHIFT) {
|
|
bool switchToRTL;
|
|
if (IsCtrlShiftPressed(switchToRTL)) {
|
|
mShouldSwitchTextDirection = true;
|
|
mSwitchToRTL = switchToRTL;
|
|
}
|
|
} else if (keyCode != nsIDOMKeyEvent::DOM_VK_CONTROL) {
|
|
// In case the user presses any other key besides Ctrl and Shift
|
|
mShouldSwitchTextDirection = false;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
#endif
|
|
|
|
nsresult
|
|
nsEditorEventListener::KeyPress(nsIDOMKeyEvent* aKeyEvent)
|
|
{
|
|
NS_ENSURE_TRUE(aKeyEvent, NS_OK);
|
|
|
|
if (!mEditor->IsAcceptableInputEvent(aKeyEvent)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// DOM event handling happens in two passes, the client pass and the system
|
|
// pass. We do all of our processing in the system pass, to allow client
|
|
// handlers the opportunity to cancel events and prevent typing in the editor.
|
|
// If the client pass cancelled the event, defaultPrevented will be true
|
|
// below.
|
|
|
|
bool defaultPrevented;
|
|
aKeyEvent->GetDefaultPrevented(&defaultPrevented);
|
|
if (defaultPrevented) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult rv = mEditor->HandleKeyPressEvent(aKeyEvent);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
aKeyEvent->GetDefaultPrevented(&defaultPrevented);
|
|
if (defaultPrevented) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!ShouldHandleNativeKeyBindings(aKeyEvent)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Now, ask the native key bindings to handle the event.
|
|
WidgetKeyboardEvent* keyEvent =
|
|
aKeyEvent->GetInternalNSEvent()->AsKeyboardEvent();
|
|
MOZ_ASSERT(keyEvent,
|
|
"DOM key event's internal event must be WidgetKeyboardEvent");
|
|
nsIWidget* widget = keyEvent->widget;
|
|
// If the event is created by chrome script, the widget is always nullptr.
|
|
if (!widget) {
|
|
nsCOMPtr<nsIPresShell> ps = GetPresShell();
|
|
nsPresContext* pc = ps ? ps->GetPresContext() : nullptr;
|
|
widget = pc ? pc->GetNearestWidget() : nullptr;
|
|
NS_ENSURE_TRUE(widget, NS_OK);
|
|
}
|
|
|
|
nsCOMPtr<nsIDocument> doc = mEditor->GetDocument();
|
|
bool handled = widget->ExecuteNativeKeyBinding(
|
|
nsIWidget::NativeKeyBindingsForRichTextEditor,
|
|
*keyEvent, DoCommandCallback, doc);
|
|
if (handled) {
|
|
aKeyEvent->PreventDefault();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsEditorEventListener::MouseClick(nsIDOMMouseEvent* aMouseEvent)
|
|
{
|
|
// nothing to do if editor isn't editable or clicked on out of the editor.
|
|
if (mEditor->IsReadonly() || mEditor->IsDisabled() ||
|
|
!mEditor->IsAcceptableInputEvent(aMouseEvent)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Notifies clicking on editor to IMEStateManager even when the event was
|
|
// consumed.
|
|
if (EditorHasFocus()) {
|
|
nsPresContext* presContext = GetPresContext();
|
|
if (presContext) {
|
|
IMEStateManager::OnClickInEditor(presContext, GetFocusedRootContent(),
|
|
aMouseEvent);
|
|
}
|
|
}
|
|
|
|
bool preventDefault;
|
|
nsresult rv = aMouseEvent->GetDefaultPrevented(&preventDefault);
|
|
if (NS_FAILED(rv) || preventDefault) {
|
|
// We're done if 'preventdefault' is true (see for example bug 70698).
|
|
return rv;
|
|
}
|
|
|
|
// If we got a mouse down inside the editing area, we should force the
|
|
// IME to commit before we change the cursor position
|
|
mEditor->ForceCompositionEnd();
|
|
|
|
int16_t button = -1;
|
|
aMouseEvent->GetButton(&button);
|
|
if (button == 1) {
|
|
return HandleMiddleClickPaste(aMouseEvent);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsEditorEventListener::HandleMiddleClickPaste(nsIDOMMouseEvent* aMouseEvent)
|
|
{
|
|
if (!Preferences::GetBool("middlemouse.paste", false)) {
|
|
// Middle click paste isn't enabled.
|
|
return NS_OK;
|
|
}
|
|
|
|
// Set the selection to the point under the mouse cursor:
|
|
nsCOMPtr<nsIDOMNode> parent;
|
|
if (NS_FAILED(aMouseEvent->GetRangeParent(getter_AddRefs(parent)))) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
int32_t offset = 0;
|
|
if (NS_FAILED(aMouseEvent->GetRangeOffset(&offset))) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
RefPtr<Selection> selection = mEditor->GetSelection();
|
|
if (selection) {
|
|
selection->Collapse(parent, offset);
|
|
}
|
|
|
|
// If the ctrl key is pressed, we'll do paste as quotation.
|
|
// Would've used the alt key, but the kde wmgr treats alt-middle specially.
|
|
bool ctrlKey = false;
|
|
aMouseEvent->GetCtrlKey(&ctrlKey);
|
|
|
|
nsCOMPtr<nsIEditorMailSupport> mailEditor;
|
|
if (ctrlKey) {
|
|
mailEditor = do_QueryObject(mEditor);
|
|
}
|
|
|
|
nsresult rv;
|
|
int32_t clipboard = nsIClipboard::kGlobalClipboard;
|
|
nsCOMPtr<nsIClipboard> clipboardService =
|
|
do_GetService("@mozilla.org/widget/clipboard;1", &rv);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
bool selectionSupported;
|
|
rv = clipboardService->SupportsSelectionClipboard(&selectionSupported);
|
|
if (NS_SUCCEEDED(rv) && selectionSupported) {
|
|
clipboard = nsIClipboard::kSelectionClipboard;
|
|
}
|
|
}
|
|
|
|
if (mailEditor) {
|
|
mailEditor->PasteAsQuotation(clipboard);
|
|
} else {
|
|
mEditor->Paste(clipboard);
|
|
}
|
|
|
|
// Prevent the event from propagating up to be possibly handled
|
|
// again by the containing window:
|
|
aMouseEvent->StopPropagation();
|
|
aMouseEvent->PreventDefault();
|
|
|
|
// We processed the event, whether drop/paste succeeded or not
|
|
return NS_OK;
|
|
}
|
|
|
|
bool
|
|
nsEditorEventListener::NotifyIMEOfMouseButtonEvent(
|
|
nsIDOMMouseEvent* aMouseEvent)
|
|
{
|
|
if (!EditorHasFocus()) {
|
|
return false;
|
|
}
|
|
|
|
bool defaultPrevented;
|
|
nsresult rv = aMouseEvent->GetDefaultPrevented(&defaultPrevented);
|
|
NS_ENSURE_SUCCESS(rv, false);
|
|
if (defaultPrevented) {
|
|
return false;
|
|
}
|
|
nsPresContext* presContext = GetPresContext();
|
|
NS_ENSURE_TRUE(presContext, false);
|
|
return IMEStateManager::OnMouseButtonEventInEditor(presContext,
|
|
GetFocusedRootContent(),
|
|
aMouseEvent);
|
|
}
|
|
|
|
nsresult
|
|
nsEditorEventListener::MouseDown(nsIDOMMouseEvent* aMouseEvent)
|
|
{
|
|
// FYI: This may be called by nsHTMLEditorEventListener::MouseDown() even
|
|
// when the event is not acceptable for committing composition.
|
|
mEditor->ForceCompositionEnd();
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsEditorEventListener::HandleText(nsIDOMEvent* aTextEvent)
|
|
{
|
|
if (!mEditor->IsAcceptableInputEvent(aTextEvent)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// if we are readonly or disabled, then do nothing.
|
|
if (mEditor->IsReadonly() || mEditor->IsDisabled()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
return mEditor->UpdateIMEComposition(aTextEvent);
|
|
}
|
|
|
|
/**
|
|
* Drag event implementation
|
|
*/
|
|
|
|
nsresult
|
|
nsEditorEventListener::DragEnter(nsIDOMDragEvent* aDragEvent)
|
|
{
|
|
NS_ENSURE_TRUE(aDragEvent, NS_OK);
|
|
|
|
nsCOMPtr<nsIPresShell> presShell = GetPresShell();
|
|
NS_ENSURE_TRUE(presShell, NS_OK);
|
|
|
|
if (!mCaret) {
|
|
mCaret = new nsCaret();
|
|
mCaret->Init(presShell);
|
|
mCaret->SetCaretReadOnly(true);
|
|
// This is to avoid the requirement that the Selection is Collapsed which
|
|
// it can't be when dragging a selection in the same shell.
|
|
// See nsCaret::IsVisible().
|
|
mCaret->SetVisibilityDuringSelection(true);
|
|
}
|
|
|
|
presShell->SetCaret(mCaret);
|
|
|
|
return DragOver(aDragEvent);
|
|
}
|
|
|
|
nsresult
|
|
nsEditorEventListener::DragOver(nsIDOMDragEvent* aDragEvent)
|
|
{
|
|
NS_ENSURE_TRUE(aDragEvent, NS_OK);
|
|
|
|
nsCOMPtr<nsIDOMNode> parent;
|
|
bool defaultPrevented;
|
|
aDragEvent->GetDefaultPrevented(&defaultPrevented);
|
|
if (defaultPrevented) {
|
|
return NS_OK;
|
|
}
|
|
|
|
aDragEvent->GetRangeParent(getter_AddRefs(parent));
|
|
nsCOMPtr<nsIContent> dropParent = do_QueryInterface(parent);
|
|
NS_ENSURE_TRUE(dropParent, NS_ERROR_FAILURE);
|
|
|
|
if (dropParent->IsEditable() && CanDrop(aDragEvent)) {
|
|
aDragEvent->PreventDefault(); // consumed
|
|
|
|
if (!mCaret) {
|
|
return NS_OK;
|
|
}
|
|
|
|
int32_t offset = 0;
|
|
nsresult rv = aDragEvent->GetRangeOffset(&offset);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
mCaret->SetVisible(true);
|
|
mCaret->SetCaretPosition(parent, offset);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!IsFileControlTextBox()) {
|
|
// This is needed when dropping on an input, to prevent the editor for
|
|
// the editable parent from receiving the event.
|
|
aDragEvent->StopPropagation();
|
|
}
|
|
|
|
if (mCaret) {
|
|
mCaret->SetVisible(false);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsEditorEventListener::CleanupDragDropCaret()
|
|
{
|
|
if (!mCaret) {
|
|
return;
|
|
}
|
|
|
|
mCaret->SetVisible(false); // hide it, so that it turns off its timer
|
|
|
|
nsCOMPtr<nsIPresShell> presShell = GetPresShell();
|
|
if (presShell) {
|
|
presShell->RestoreCaret();
|
|
}
|
|
|
|
mCaret->Terminate();
|
|
mCaret = nullptr;
|
|
}
|
|
|
|
nsresult
|
|
nsEditorEventListener::DragExit(nsIDOMDragEvent* aDragEvent)
|
|
{
|
|
NS_ENSURE_TRUE(aDragEvent, NS_OK);
|
|
|
|
CleanupDragDropCaret();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsEditorEventListener::Drop(nsIDOMDragEvent* aDragEvent)
|
|
{
|
|
NS_ENSURE_TRUE(aDragEvent, NS_OK);
|
|
|
|
CleanupDragDropCaret();
|
|
|
|
bool defaultPrevented;
|
|
aDragEvent->GetDefaultPrevented(&defaultPrevented);
|
|
if (defaultPrevented) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIDOMNode> parent;
|
|
aDragEvent->GetRangeParent(getter_AddRefs(parent));
|
|
nsCOMPtr<nsIContent> dropParent = do_QueryInterface(parent);
|
|
NS_ENSURE_TRUE(dropParent, NS_ERROR_FAILURE);
|
|
|
|
if (!dropParent->IsEditable() || !CanDrop(aDragEvent)) {
|
|
// was it because we're read-only?
|
|
if ((mEditor->IsReadonly() || mEditor->IsDisabled()) &&
|
|
!IsFileControlTextBox()) {
|
|
// it was decided to "eat" the event as this is the "least surprise"
|
|
// since someone else handling it might be unintentional and the
|
|
// user could probably re-drag to be not over the disabled/readonly
|
|
// editfields if that is what is desired.
|
|
return aDragEvent->StopPropagation();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
aDragEvent->StopPropagation();
|
|
aDragEvent->PreventDefault();
|
|
return mEditor->InsertFromDrop(aDragEvent);
|
|
}
|
|
|
|
bool
|
|
nsEditorEventListener::CanDrop(nsIDOMDragEvent* aEvent)
|
|
{
|
|
// if the target doc is read-only, we can't drop
|
|
if (mEditor->IsReadonly() || mEditor->IsDisabled()) {
|
|
return false;
|
|
}
|
|
|
|
nsCOMPtr<nsIDOMDataTransfer> domDataTransfer;
|
|
aEvent->GetDataTransfer(getter_AddRefs(domDataTransfer));
|
|
nsCOMPtr<DataTransfer> dataTransfer = do_QueryInterface(domDataTransfer);
|
|
NS_ENSURE_TRUE(dataTransfer, false);
|
|
|
|
RefPtr<DOMStringList> types = dataTransfer->Types();
|
|
|
|
// Plaintext editors only support dropping text. Otherwise, HTML and files
|
|
// can be dropped as well.
|
|
if (!types->Contains(NS_LITERAL_STRING(kTextMime)) &&
|
|
!types->Contains(NS_LITERAL_STRING(kMozTextInternal)) &&
|
|
(mEditor->IsPlaintextEditor() ||
|
|
(!types->Contains(NS_LITERAL_STRING(kHTMLMime)) &&
|
|
!types->Contains(NS_LITERAL_STRING(kFileMime))))) {
|
|
return false;
|
|
}
|
|
|
|
// If there is no source node, this is probably an external drag and the
|
|
// drop is allowed. The later checks rely on checking if the drag target
|
|
// is the same as the drag source.
|
|
nsCOMPtr<nsIDOMNode> sourceNode;
|
|
dataTransfer->GetMozSourceNode(getter_AddRefs(sourceNode));
|
|
if (!sourceNode) {
|
|
return true;
|
|
}
|
|
|
|
// There is a source node, so compare the source documents and this document.
|
|
// Disallow drops on the same document.
|
|
|
|
nsCOMPtr<nsIDOMDocument> domdoc = mEditor->GetDOMDocument();
|
|
NS_ENSURE_TRUE(domdoc, false);
|
|
|
|
nsCOMPtr<nsIDOMDocument> sourceDoc;
|
|
nsresult rv = sourceNode->GetOwnerDocument(getter_AddRefs(sourceDoc));
|
|
NS_ENSURE_SUCCESS(rv, false);
|
|
|
|
// If the source and the dest are not same document, allow to drop it always.
|
|
if (domdoc != sourceDoc) {
|
|
return true;
|
|
}
|
|
|
|
// If the source node is a remote browser, treat this as coming from a
|
|
// different document and allow the drop.
|
|
nsCOMPtr<nsIContent> sourceContent = do_QueryInterface(sourceNode);
|
|
TabParent* tp = TabParent::GetFrom(sourceContent);
|
|
if (tp) {
|
|
return true;
|
|
}
|
|
|
|
RefPtr<Selection> selection = mEditor->GetSelection();
|
|
if (!selection) {
|
|
return false;
|
|
}
|
|
|
|
// If selection is collapsed, allow to drop it always.
|
|
if (selection->Collapsed()) {
|
|
return true;
|
|
}
|
|
|
|
nsCOMPtr<nsIDOMNode> parent;
|
|
rv = aEvent->GetRangeParent(getter_AddRefs(parent));
|
|
if (NS_FAILED(rv) || !parent) {
|
|
return false;
|
|
}
|
|
|
|
int32_t offset = 0;
|
|
rv = aEvent->GetRangeOffset(&offset);
|
|
NS_ENSURE_SUCCESS(rv, false);
|
|
|
|
int32_t rangeCount;
|
|
rv = selection->GetRangeCount(&rangeCount);
|
|
NS_ENSURE_SUCCESS(rv, false);
|
|
|
|
for (int32_t i = 0; i < rangeCount; i++) {
|
|
RefPtr<nsRange> range = selection->GetRangeAt(i);
|
|
if (!range) {
|
|
// Don't bail yet, iterate through them all
|
|
continue;
|
|
}
|
|
|
|
bool inRange = true;
|
|
range->IsPointInRange(parent, offset, &inRange);
|
|
if (inRange) {
|
|
// Okay, now you can bail, we are over the orginal selection
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
nsresult
|
|
nsEditorEventListener::HandleStartComposition(nsIDOMEvent* aCompositionEvent)
|
|
{
|
|
if (!mEditor->IsAcceptableInputEvent(aCompositionEvent)) {
|
|
return NS_OK;
|
|
}
|
|
WidgetCompositionEvent* compositionStart =
|
|
aCompositionEvent->GetInternalNSEvent()->AsCompositionEvent();
|
|
return mEditor->BeginIMEComposition(compositionStart);
|
|
}
|
|
|
|
void
|
|
nsEditorEventListener::HandleEndComposition(nsIDOMEvent* aCompositionEvent)
|
|
{
|
|
if (!mEditor->IsAcceptableInputEvent(aCompositionEvent)) {
|
|
return;
|
|
}
|
|
|
|
mEditor->EndIMEComposition();
|
|
}
|
|
|
|
nsresult
|
|
nsEditorEventListener::Focus(nsIDOMEvent* aEvent)
|
|
{
|
|
NS_ENSURE_TRUE(aEvent, NS_OK);
|
|
|
|
// Don't turn on selection and caret when the editor is disabled.
|
|
if (mEditor->IsDisabled()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Spell check a textarea the first time that it is focused.
|
|
SpellCheckIfNeeded();
|
|
if (!mEditor) {
|
|
// In e10s, this can cause us to flush notifications, which can destroy
|
|
// the node we're about to focus.
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIDOMEventTarget> target;
|
|
aEvent->GetTarget(getter_AddRefs(target));
|
|
nsCOMPtr<nsINode> node = do_QueryInterface(target);
|
|
NS_ENSURE_TRUE(node, NS_ERROR_UNEXPECTED);
|
|
|
|
// If the target is a document node but it's not editable, we should ignore
|
|
// it because actual focused element's event is going to come.
|
|
if (node->IsNodeOfType(nsINode::eDOCUMENT) &&
|
|
!node->HasFlag(NODE_IS_EDITABLE)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (node->IsNodeOfType(nsINode::eCONTENT)) {
|
|
// XXX If the focus event target is a form control in contenteditable
|
|
// element, perhaps, the parent HTML editor should do nothing by this
|
|
// handler. However, FindSelectionRoot() returns the root element of the
|
|
// contenteditable editor. So, the editableRoot value is invalid for
|
|
// the plain text editor, and it will be set to the wrong limiter of
|
|
// the selection. However, fortunately, actual bugs are not found yet.
|
|
nsCOMPtr<nsIContent> editableRoot = mEditor->FindSelectionRoot(node);
|
|
|
|
// make sure that the element is really focused in case an earlier
|
|
// listener in the chain changed the focus.
|
|
if (editableRoot) {
|
|
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
NS_ENSURE_TRUE(fm, NS_OK);
|
|
|
|
nsCOMPtr<nsIDOMElement> element;
|
|
fm->GetFocusedElement(getter_AddRefs(element));
|
|
if (!SameCOMIdentity(element, target)) {
|
|
return NS_OK;
|
|
}
|
|
}
|
|
}
|
|
|
|
mEditor->OnFocus(target);
|
|
|
|
nsCOMPtr<nsIPresShell> ps = GetPresShell();
|
|
NS_ENSURE_TRUE(ps, NS_OK);
|
|
nsCOMPtr<nsIContent> focusedContent = mEditor->GetFocusedContentForIME();
|
|
IMEStateManager::OnFocusInEditor(ps->GetPresContext(), focusedContent,
|
|
mEditor);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsEditorEventListener::Blur(nsIDOMEvent* aEvent)
|
|
{
|
|
NS_ENSURE_TRUE(aEvent, NS_OK);
|
|
|
|
// check if something else is focused. If another element is focused, then
|
|
// we should not change the selection.
|
|
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
NS_ENSURE_TRUE(fm, NS_OK);
|
|
|
|
nsCOMPtr<nsIDOMElement> element;
|
|
fm->GetFocusedElement(getter_AddRefs(element));
|
|
if (!element) {
|
|
mEditor->FinalizeSelection();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsEditorEventListener::SpellCheckIfNeeded()
|
|
{
|
|
// If the spell check skip flag is still enabled from creation time,
|
|
// disable it because focused editors are allowed to spell check.
|
|
uint32_t currentFlags = 0;
|
|
mEditor->GetFlags(¤tFlags);
|
|
if(currentFlags & nsIPlaintextEditor::eEditorSkipSpellCheck) {
|
|
currentFlags ^= nsIPlaintextEditor::eEditorSkipSpellCheck;
|
|
mEditor->SetFlags(currentFlags);
|
|
}
|
|
}
|
|
|
|
bool
|
|
nsEditorEventListener::IsFileControlTextBox()
|
|
{
|
|
dom::Element* root = mEditor->GetRoot();
|
|
if (!root || !root->ChromeOnlyAccess()) {
|
|
return false;
|
|
}
|
|
nsIContent* parent = root->FindFirstNonChromeOnlyAccessContent();
|
|
if (!parent || !parent->IsHTMLElement(nsGkAtoms::input)) {
|
|
return false;
|
|
}
|
|
nsCOMPtr<nsIFormControl> formControl = do_QueryInterface(parent);
|
|
return formControl->GetType() == NS_FORM_INPUT_FILE;
|
|
}
|
|
|
|
bool
|
|
nsEditorEventListener::ShouldHandleNativeKeyBindings(nsIDOMKeyEvent* aKeyEvent)
|
|
{
|
|
// Only return true if the target of the event is a desendant of the active
|
|
// editing host in order to match the similar decision made in
|
|
// nsXBLWindowKeyHandler.
|
|
// Note that IsAcceptableInputEvent doesn't check for the active editing
|
|
// host for keyboard events, otherwise this check would have been
|
|
// unnecessary. IsAcceptableInputEvent currently makes a similar check for
|
|
// mouse events.
|
|
|
|
nsCOMPtr<nsIDOMEventTarget> target;
|
|
aKeyEvent->GetTarget(getter_AddRefs(target));
|
|
nsCOMPtr<nsIContent> targetContent = do_QueryInterface(target);
|
|
if (!targetContent) {
|
|
return false;
|
|
}
|
|
|
|
nsCOMPtr<nsIHTMLEditor> htmlEditor =
|
|
do_QueryInterface(static_cast<nsIEditor*>(mEditor));
|
|
if (!htmlEditor) {
|
|
return false;
|
|
}
|
|
|
|
nsCOMPtr<nsIDocument> doc = mEditor->GetDocument();
|
|
if (doc->HasFlag(NODE_IS_EDITABLE)) {
|
|
// Don't need to perform any checks in designMode documents.
|
|
return true;
|
|
}
|
|
|
|
nsIContent* editingHost = htmlEditor->GetActiveEditingHost();
|
|
if (!editingHost) {
|
|
return false;
|
|
}
|
|
|
|
return nsContentUtils::ContentIsDescendantOf(targetContent, editingHost);
|
|
}
|